Commit f4f62a3c authored by Jeremy Rosen's avatar Jeremy Rosen Committed by Peter Korsgaard
Browse files

Allow a single DHCP configuration via the system configuration submenu 



This patch allows the setup of simple a single interface to be
automatically brought up and configured via DHCP on system startup.

The interface name can be set via a configuration option. This patch
does not support systemd-networkd, any complex network configuration should
be done via overlay of /etc/network/interfaces or the relevant networkd
configuration file

[Peter: rename to BR2_SYSTEM_DHCP, tweak help text & implementation]
Signed-off-by: default avatarJérémy Rosen <jeremy.rosen@openwide.fr>
Signed-off-by: default avatarPeter Korsgaard <peter@korsgaard.com>
parent d538b8bf

system/Config.in

+20 −0
Original line number Diff line number Diff line
@@ -326,6 +326,26 @@ config BR2_TARGET_GENERIC_REMOUNT_ROOTFS_RW 


endif # BR2_ROOTFS_SKELETON_DEFAULT





config BR2_SYSTEM_DHCP

	string "Network interface to configure through DHCP"

	default ""

	depends on !BR2_PACKAGE_SYSTEMD_NETWORKD && (BR2_PACKAGE_BUSYBOX || BR2_PACKAGE_IFUPDOWN)

	help

	  Enter here the name of the network interface (E.G. eth0) to

	  automatically configure through DHCP at bootup.



	  If left empty, no automatic DHCP requests will take place.



	  For more complicated network setups use an overlay to overwrite

	  /etc/network/interfaces or add a networkd configuration file.



comment "automatic network configuration via DHCP is not compatible with networkd"

	depends on BR2_PACKAGE_SYSTEMD_NETWORKD



comment "automatic network configuration via DHCP needs ifupdown or busybox"

	depends on !(BR2_PACKAGE_BUSYBOX || BR2_PACKAGE_IFUPDOWN)



config BR2_TARGET_TZ_INFO

	bool "Install timezone info"

	# No timezone for musl; only for uClibc or (e)glibc.

system/skeleton/etc/network/interfaces

deleted100644 → 0
+0 −4
Original line number Diff line number Diff line 
# Configure Loopback

auto lo

iface lo inet loopback

system/system.mk

+29 −0
Original line number Diff line number Diff line
@@ -38,6 +38,35 @@ ifneq ($(TARGET_GENERIC_ROOT_PASSWD),) 
TARGETS += host-mkpasswd

endif



define SET_NETWORK_LOCALHOST

	( \

		echo "# interface file auto-generated by buildroot"; \

		echo ;                                               \

		echo "auto lo";                                      \

		echo "iface lo inet loopback";                       \

	) > $(TARGET_DIR)/etc/network/interfaces

endef



NETWORK_DHCP_IFACE = $(call qstrip,$(BR2_SYSTEM_DHCP))



ifneq ($(NETWORK_DHCP_IFACE),)

define SET_NETWORK_DHCP

	( \

		echo ;                                               \

		echo "auto $(NETWORK_DHCP_IFACE)";                   \

		echo "iface $(NETWORK_DHCP_IFACE) inet dhcp";        \

	) >> $(TARGET_DIR)/etc/network/interfaces

endef

endif



define SET_NETWORK

	mkdir -p $(TARGET_DIR)/etc/network/

	$(SET_NETWORK_LOCALHOST)

	$(SET_NETWORK_DHCP)

endef



TARGET_FINALIZE_HOOKS += SET_NETWORK



ifeq ($(BR2_ROOTFS_SKELETON_DEFAULT),y)



define SYSTEM_ROOT_PASSWD